40 CFR 421.144 - Standards of performance for new sources.

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§ 421.144 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Sodium Antimonate Autoclave Wastewater.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of antimony contained in sodium antimonate product
Antimony 30.150 13.440
Arsenic 21.720 9.687
Mercury 2.344 0.937
Total suspended solids 234.400 187.500
pH ( 1) ( 1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Fouled Anolyte.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of antimony metal produced by electrowinning
Antimony 30.150 13.440
Arsenic 21.720 9.687
Mercury 2.344 0.937
Total suspended solids 234.400 187.500
pH ( 1) ( 1)

1 Within the range of 7.5 to 10.0 at all times.

(c) Cathode Antimony Wash Water.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of antimony metal produced by electrowinning
Antimony 60.310 26.870
Arsenic 43.430 19.370
Mercury 4.687 1.875
Total suspended solids 468.700 375.000
pH ( 1) ( 1)

1 Within the range of 7.5 to 10.0 at all times.

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